Organic material composition and applications thereof

ABSTRACT

The present invention provides an organic material composition and applications thereof. By the combination of the compounds comprised in the organic material composition, the organic material composition makes the element have a lower driving voltage, a higher current efficiency and a longer service life.

CROSS-REFERENCE TO RELATED APPLICATION

Pursuant to 35 U.S.C. § 119(a), this application claims the benefit ofthe priority to Chinese Patent Application No. 202111129875.8, filed onSep. 26, 2021. The content of the prior application is incorporatedherein by its entirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention belongs to the field of organicelectroluminescence material, which relates to an organic materialcomposition and applications thereof.

2. Description of the Prior Arts

An electroluminescence (EL) device is a self-luminous display devicewhich is advantageous for its wider angle of view, higher contrastratio, and faster response time.

The most important key factor to decide the light-emitting efficiency ofan EL device is the light-emitting material. A light-emitting materialneeds to have the following characteristics: high quantum efficiency,high mobility of electrons and holes, and the uniformity and stabilityof the light-emitting layer formed by the light-emitting material.

Recently, it is urgent to develop an organic EL device having higherlight-emitting efficiency and longer service life. Specifically, inlight of the EL characteristics needed for medium and large organiclight-emitting diodes (OLED) panels, an excellent light-emittingmaterial superior to regular materials is urgently needed. Thus, a highglass transition temperature and a high pyrolysis temperature arerequired for the host material in order to achieve high thermalstability and high electrochemical stability, thereby resulting in alonger service life, good formability of amorphous films, good adhesionwith adjacent layers, and good immobility between layers.

To enhance color purity, light-emitting efficiency and stability, thelight-emitting material as a host material can be used in a combinationof a host material and a dopant. Generally, an EL device with goodcharacteristics has an emitting layer structure formed by a material inwhich a dopant is doped into a host material. When the dopant/hostmaterial system is used as the light-emitting material, the hostmaterial will greatly influence the efficiency and service life of theEL device. Thus, in the field of the present invention, it is importantto further develop a host material.

SUMMARY OF THE INVENTION

To overcome the shortcomings of the existing technology, the objectiveof the present invention is to provide an organic material compositionand applications thereof.

To achieve the above objective, the present invention uses the followingtechnical approaches:

-   In one aspect, the present invention provides an organic material    composition comprising at least one compound having a structure    represented by Formula (1) and at least one compound having a    structure represented by Formula (2),

-   

-   wherein, R is selected from hydrogen, deuterium, halogen, a cyano    group, a substituted or unsubstituted C1-C30 alkyl group, a    substituted or unsubstituted C3-C30 cycloalkyl group, a substituted    or unsubstituted C6-C30 aryl group, and a substituted or    unsubstituted C3-C30 heteroaryl group;

-   R¹ is —L¹Ar¹; R² is —L²Ar²; R³ is —L³Ar³; R⁴ is —L⁴Ar⁴;

-   L¹ to L⁴ are each independently selected from a bond, a substituted    or unsubstituted C6-C30 arylene group, and a substituted or    unsubstituted C3-C30 heteroarylene group; and

-   Ar¹ to Ar⁴ are each independently selected from hydrogen, deuterium,    halogen, a cyano group, a substituted or unsubstituted C6-C60 aryl    group, and a substituted or unsubstituted C3-C60 heteroaryl group;

-   

-   Ar^(W1), Ar^(W2) and Ar^(W3) are each independently selected from    hydrogen, deuterium, a substituted or unsubstituted C6-C60 aryl    group, and a substituted or unsubstituted C3-C60 heteroaryl group;    and

-   L^(W1), L^(W2) and L^(W3) are each independently selected from a    bond, a substituted or unsubstituted C6-C30 arylene group, and a    substituted or unsubstituted C3-C30 heteroarylene group.

In the present invention, by the combination of at least one compoundhaving a structure represented by Formula (1) and at least one compoundhaving a structure represented by Formula (2), the organic materialcomposition not only has an energy level that can be aligned with theenergy levels of the adjacent layers, but also has a higher tripletenergy level, which are advantageous for the recombination of chargecarriers in the emitting layer, thereby increasing light-emittingefficiency.

Preferably, in Formula (1),

-   at least one of Ar¹ to Ar⁴ is a group represented by Formula (a):

-   

-   X¹ is selected from N and CR^(X1); X² is selected from N and    CR^(X2); X³ is selected from N and CR^(X3); X⁴ is selected from N    and CR^(X4); X⁵ is selected from N and CR^(X5);

-   R^(X1) to R^(X5) are each independently selected from hydrogen,    deuterium, a cyano group, a substituted or unsubstituted C1-C30    alkyl group, a substituted or unsubstituted C3-C30 cycloalkyl group,    a substituted or unsubstituted C6-C30 aryl group, and a substituted    or unsubstituted C3-C30 heteroaryl group; R^(X1) to R^(X5) are    present individually without forming a ring, or any adjacent two of    R^(X1) to R^(X5) joined to form a ring A, and the ring A is a    benzene ring.

Preferably, X¹ is N; X² is N; X³ is CR^(X3); X⁴ is CR^(X4); X⁵ isCR^(X5).

Preferably, X¹ is N; X³ is N; X² is CR^(X2); X⁴ is CR^(X4); X⁵ isCR^(X5).

Preferably, X¹ is N; X² is N; X³ is N; X⁴ is CR^(X4); X⁵ is CR^(X5).

Preferably, the Formula (a) is selected from

and R^(X5) is the same as described above.

Preferably, the Formula (a) is selected from

and R^(X2) is the same as described above.

Preferably, the R^(X1) to R^(X5) are each independently selected fromhydrogen, deuterium, halogen, and a group selected from a phenyl group,a biphenylyl group, a terphenylyl group, a naphthyl group, a phenanthrylgroup, an anthryl group, a phenylnaphthyl group, a naphthylphenyl group,a pyridyl group, a bipyridyl group, a dibenzofuryl group, adibenzothiophenyl group, a carbazolyl group, a carbazolylphenyl group, aphenylcarbazolyl group, a dimethylfluorenyl group, a diphenylfluorenylgroup, a spiro-bifluorenyl group, a dibenzofurylphenyl group, adibenzothiophenylphenyl group, a dimethylfluorenylphenyl group, abenzocarbazolyl group, a benzonaphthofuryl group, and abenzonaphthothiophenyl group, each of which is substituted orunsubstituted.

Preferably, at least one of the R¹, R², R³ and R⁴ is hydrogen.

Preferably, at least two of the R¹, R², R³ and R⁴ are hydrogen.

Preferably, at least three of the R¹, R², R³ and R⁴ are hydrogen.

Preferably, the R² is —L²Ar²; and R¹, R³, and R⁴ are all hydrogen.

Preferably, the R³ is —L³Ar³; and R¹, R², and R⁴ are all hydrogen.

Preferably, the R is selected from a phenyl group and a biphenylylgroup, each of which is substituted or unsubstituted.

Preferably, L¹ to L⁴ are each independently selected from a bond, asubstituted or unsubstituted phenylene group, a substituted orunsubstituted naphthylene group, and a substituted or unsubstitutedbiphenylene group.

Preferably, the compound having a structure represented by Formula (1)is selected from the following compounds:

; wherein D represents deuterium.

Preferably, in Formula (2), Ar^(W1), Ar^(W2) and Ar^(W3) are eachindependently selected from a phenyl group, a biphenylyl group, aterphenylyl group, a naphthyl group, a phenylnaphthyl group, anaphthylphenyl group, an anthryl group, a phenanthryl group, atriphenylenylene group, a pyridyl group, or a group represented byFormula (b-1):

wherein W is selected from O, S, CR^(W1)R^(W2) and NR^(W), in whichR^(W) is —L^(W)R^(W3);

-   when any one or two or three of Ar^(W1), Ar^(W2) and Ar^(W3) are    selected from Formula (b-1), any one of R¹⁰ to R¹⁷, R^(W1), R^(W2)    and R^(W3) is connected to L^(W1), L^(W2) or L^(W3) by chemical    bonding;-   when Formula (2) comprises multiple groups represented by Formula    (b-1), the groups represented by Formula (b-1) are the same or    different;-   R¹⁰ to R¹⁷, R^(W1), R^(W2) and R^(W3) are each independently    selected from a bond, hydrogen, deuterium, halogen, a cyano group, a    substituted or unsubstituted C1-C30 alkyl group, a C1-C30 alkyl    group in which one or more methylene groups are independently    substituted by —O— and/or —S— in a manner that O atom and/or S atom    are not adjacent to each other, a substituted or unsubstituted    C7-C30 arylalkyl group, a substituted or unsubstituted C6-C30 aryl    group, a substituted or unsubstituted C3-C30 heteroaryl group, a    substituted or unsubstituted C4-C30 heteroarylalkyl group, a    substituted or unsubstituted C3-C30 cycloalkyl group, a substituted    or unsubstituted C3-C30 heterocycloalkyl group, a substituted or    unsubstituted C3-C30 cycloalkenyl group, a substituted or    unsubstituted C1-C30 alkoxy group, and a substituted or    unsubstituted C6-C30 aryloxy group;-   R¹⁰ to R¹⁷ are present individually without forming a ring, or any    adjacent two of R¹⁰ to R¹⁷ joined to form a ring B, and the ring B    is a substituted or unsubstituted C6-C30 aromatic ring;-   L^(W) is selected from a bond, a substituted or unsubstituted C6-C30    arylene group, and a substituted or unsubstituted C3-C30    heteroarylene group.

Preferably, in Formula (b-1), the ring B is a substituted orunsubstituted benzene ring, or a substituted or unsubstitutednaphthalene ring.

Preferably, Formula (b-1) is selected from the structures represented asbelow:

Preferably, R¹⁰ to R¹⁷ are each independently selected from hydrogen,deuterium, a phenyl group, a biphenylyl group, a terphenylyl group, anaphthyl group, a phenylnaphthyl group, a naphthylphenyl group, ananthryl group, a phenanthryl group, a benzophenanthryl group, a pyridylgroup, a dibenzofuryl group, a dibenzothiophenyl group, adibenzofurylphenyl group, a dibenzothiophenylphenyl group, adimethylfluorenyl group, a diphenylfluorenyl group, a spiro-bifluorenylgroup, a benzonaphthofuryl group, and a benzonaphthothiophenyl group.

Preferably, R^(W1) to R^(W2) are each independently selected fromhydrogen, deuterium, a methyl group, an ethyl group and a phenyl group;or, R^(W1) to R^(W2) joined to form a spiro ring by chemical bonding,and the spiro ring is a fluorene ring.

Preferably, R^(W3) is a group selected from a phenyl group, a biphenylylgroup, a terphenylyl group, a naphthyl group, a phenanthryl group, ananthryl group, a triphenylenylene group, a phenylnaphthyl group, anaphthylphenyl group, a pyridyl group, a bipyridyl group, a dibenzofurylgroup, a dibenzothiophenyl group, a benzonaphthofuryl group, abenzonaphthothiophenyl group, a dinaphthofuryl group, adinaphthothiophenyl group, a dibenzofurylphenyl group, adibenzothiophenylphenyl group, a dimethylfluorenyl group, abenzodimethylfluorenyl group, a diphenylfluorenyl group, aspiro-bifluorenyl group, and a dimethylfluorenylphenyl group, each ofwhich is substituted or unsubstituted.

Preferably, L^(W) is selected from a bond, a phenylene group, abiphenylene group, and a naphthylene group.

Preferably, Formula (b-1) is selected from a group shown as below:

, each of which is substituted or unsubstituted; wherein “

” represents the connection position of the group.

In the present invention, preferably, when the above-mentioned group hasone or more substituents, the substituents are each independentlyselected from deuterium, halogen, a cyano group, a nitro group, anunsubstituted or R′-substituted C1-C4 straight or branched alkyl group,an unsubstituted or R′-substituted C6-C20 aryl group, an unsubstitutedor R′-substituted C3-C20 heteroaryl group, and an unsubstituted orR′-substituted C6-C20 arylamino group; R′ is selected from deuterium,halogen, a cyano group and a nitro group.

Preferably, the aryl group is selected from a phenyl group, a biphenylylgroup, a terphenylyl group, a naphthyl group, an anthryl group, aphenanthryl group, a benzophenanthryl group, a naphthylphenyl group, adimethylfluorenyl group, a diphenylfluorenyl group and aspiro-bifluorenyl group.

Preferably, the heteroaryl group is selected from a pyridyl group, adibenzofuryl group, a dibenzothiophenyl group, a carbazolyl group, aphenylcarbazolyl group, a pyridylcarbazolyl group, a naphthylcarbazolylgroup, a biphenylylcarbazolyl group, a dibenzofurylphenyl group, adibenzothiophenylphenyl group, a benzonaphthofuryl group, abenzonaphthothiophenyl group, a benzocarbazolyl group and adibenzocarbazolyl group.

Preferably, the alkyl group is selected from a methyl group, an ethylgroup, a propyl group, a tert-butyl group, a cyclohexyl group andadamantyl.

Preferably, the compound having a structure represented by Formula (2)is selected from the compounds shown as below:

Preferably, the compound having a structure represented by Formula (1)and the compound having a structure represented by Formula (2) have aweight ratio of 1:9 to 9:1, such as 1:9, 2:8, 3:7, 4:6, 5:5, 6:4, 7:3,8:2, 9:1, or the like; preferably 2:8 to 8:2; more preferably 3:7 to7:3; even more preferably 4:6 to 6:4.

As used in the present invention, the term “organic electroluminescencematerial” indicates a material that can be used in an organicelectroluminescence element, and may comprise at least one compound. Theorganic electroluminescence material may be comprised in any of thelayers which constitute the organic electroluminescence element, ifnecessary. For example, the organic electroluminescence material may bea hole injection material, a hole transport material, an electronblocking material, an emitting auxiliary material, an emitting layermaterial (comprising a host material and a dopant material), an electronbuffer material, a hole blocking material, an electron transportmaterial, an electron injection material or the like.

As used in the present invention, the term “halogen” may comprisefluorine, chlorine, bromine or iodine.

As used in the present invention, the term “C1-C30 alkyl group”indicates a monovalent substituent derived from a straight or branchedsaturated hydrocarbon having 1 to 30 carbon atoms, for example, itcomprises, but is not limited to a methyl group, an ethyl group, apropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group,a pentyl group, an isopentyl group, or a hexyl.

As used in the present invention, the term “C3-C30 cycloalkyl group”indicates a group derived from a monocyclic hydrocarbon or a multicyclichydrocarbon having 1 to 30 carbon atoms on the main chain, and thecycloalkyl group may comprise cyclopropyl, cyclobutyl, adamantyl group,or the like.

In the present invention, the aryl group and arylene group comprise amonocyclic, a multicyclic or a fused cyclic aryl group, in which therings may be interrupted by a short non-aromatic unit, and they maycomprise a spiro-structure. The aryl group and arylene group of thepresent invention comprise, but are not limited to, a phenyl group, abiphenylyl group, a terphenylyl group, a naphthyl group, a phenanthrylgroup, an anthryl group, a fluorenyl group, a spiro-bifluorenyl group,or the like.

In the present invention, the heteroaryl group and heteroarylene groupcomprise a monocyclic, a multicyclic or a fused cyclic heteroaryl group,in which the rings may be interrupted by a short non-aromatic unit, andthe hetero atom comprises nitrogen, oxygen or sulfur. The heteroarylgroup and heteroarylene group of the present invention comprise, but arenot limited to, a furyl group, a thiophenyl group, a pyrrolyl group, animidazolyl group, a pyrazolyl group, a thiazolyl group, a thiadiazolylgroup, an isothiazolyl group, an isoxazolyl group, an oxazolyl group, anoxadizolyl group, a triazinyl group, a tetrazinyl group, a triazolylgroup, a tetrazolyl group, a furazanyl group, a pyridyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a benzofurylgroup, a benzothiophenyl group, an isobenzofuryl group, a dibenzofurylgroup, a dibenzothiophenyl group, a benzimidazolyl group, abenzothiazolyl group, a benzisothiazolyl group, a benzisoxazolyl group,a benzoxazolyl group, an isoindolyl group, an indolyl group, anindazolyl group, a benzothiadiazolyl group, a quinolyl group, anisoquinolyl group, a cinnolinyl group, a quinazolinyl group, aquinoxalinyl group, a carbazolyl group, a phenoxazinyl group, aphenothiazinyl group, a phenanthridinyl group, a 1,3-benzodioxolylgroup, a dihydroacridinyl group, or derivatives thereof.

Preferably, the aryl group is selected from a phenyl group, a biphenylylgroup, a terphenylyl group, a naphthyl group, an anthryl group, aphenanthryl group, a 9,9′- dimethylfluorenyl group, a 9,9′-diphenylfluorenyl group and a spiro-bifluorenyl group.

Preferably, the heteroaryl group is selected from a dibenzofuryl group,a dibenzothiophenyl group, a carbazolyl group, a triazinyl group, apyridyl group, a pyrimidinyl group, an imidazolyl group, an oxazolylgroup, a thiazolyl group, a benzimidazolyl group, a benzoxazolyl group,a benzothiazolyl, a naphthimidazolyl group, a naphthoxazolyl group, anaphthothiazolyl group, a phenanthrimidazolyl group, a phenanthroxazolylgroup, a phenanthrothiazolyl group, a quinoxalinyl group, a quinazolinylgroup, an indolocarbazolyl group, an indolofluorenyl group, abenzothienopyrazinyl group, a benzothienopyrimidinyl group, abenzofuropyrazinyl group, a benzofuropyrimidinyl group, anindolopyrazinyl group, an indolopyrimidinyl group, an indenopyrazinylgroup, an indenopyrimidinyl group, aspiro[fluorene-9,1′-indene]-pyrazinyl group,spiro[fluorene-9,1′-indene]-pyrimidinyl group, benzofurocarbazolyl andbenzothienocarbazolyl.

As used in the present invention, the term “C6-C30 aryloxy group”indicates a monovalent substituent represented by RO—, wherein Rrepresents an aryl group having 6 to 30 carbon atoms. Examples of sucharyloxy group comprise, but are not limited to, a phenoxy group, anaphthyloxy group, a diphenoxy group, or the like.

As used in the present invention, the term “C1-C30 alkoxy group”indicates a monovalent substituent represented by R′O—, wherein R′represents an alkyl group having 1 to 30 carbon atoms.

As used in the present invention, the term “substituted” indicates ahydrogen atom comprised in a compound is replaced by anothersubstituent. The position of substitution is not specifically limited,provided that the hydrogen at the position can be replaced by thesubstituent. When two or more substituents are simultaneously present,the two or more substituents can be the same or different.

As used in the present invention, unless otherwise specified, thehydrogen atom comprises protium, deuterium or tritium.

In the present invention, “adjacent two groups joined to form a ring”indicates that 2 substituents at adjacent positions on the same ring oradjacent rings can be joined to form a ring by chemical bonding. Thespecific way to form a ring in the present invention is not limited (forexample, joined via a single bond, joined via a benzene ring, joined viaa naphthalene ring, fused via

fused via

fused via

, fused via

fused via

wherein the

represents fusion positions). In the same description presenthereinafter, it has the same meaning.

In the present invention, when the range of carbon atom number islimited in the definition of a functional group, the functional groupmay have a carbon atom number of any integer in the limited range. Forexample, a C6-C60 aryl group represents an aryl group that may give acarbon number of any one integer comprised in the range of 6 to 60, suchas 6, 8, 10, 15, 20, 30, 35, 40, 45, 50, 55 or 60, etc.

In the present invention, the organic compounds substituted at each ofthe described positions are prepared by a synthesis route shown asbelow:

R^(5″) is chlorine; R^(5′) is

X is halogen, preferably chlorine or bromine.

R^(6″) is chlorine; R^(6′) is

X is halogen, preferably chlorine or bromine.

R^(7″) is chlorine; R^(7′) is

X is halogen, preferably chlorine or bromine.

R^(8″) is chlorine; R^(8′) is

X is halogen, preferably chlorine or bromine.

Buchwald-Hartwig synthesis method is mainly used to synthesize Formula(2).

In another aspect, the present invention provides an organicelectroluminescence material, and the organic electroluminescencematerial comprises the above-mentioned organic material composition.

In another aspect, the present invention provides an application of theabove-mentioned organic material composition or the above-mentionedorganic electroluminescence material in preparation of an opticalelement.

Preferably, the optical element comprises any one of an organicelectroluminescence element, an organic field-effect transistor, anorganic thin film transistor, an organic light-emitting transistor, anorganic integrated circuit, an organic solar cell, an organic fieldquenching element, a light-emitting electrochemical cell, an organiclaser diode, and an organic photoreceptor.

In another aspect, the present invention provides an organicelectroluminescence element, wherein the organic electroluminescenceelement comprises an anode, a cathode, and an organic layer disposedbetween the anode and the cathode, and the organic layer comprises theabove-mentioned organic material composition or the above-mentionedorganic electroluminescence material.

Preferably, the organic layers comprise a hole injection layer, a holetransport layer, an emitting layer, an electron transport layer and anelectron injection layer, which are sequentially layered from a side ofthe anode to a side of the cathode.

Preferably, the emitting layer is made of a material comprising a hostmaterial and a guest material, wherein the host material comprises theabove-mentioned organic material composition or the above-mentionedorganic electroluminescence material.

Preferably, the guest material comprises a phosphorescence dopant, andthe phosphorescence dopant comprises a coordination complex of atransition metal.

In another aspect, the present invention provides an organicelectroluminescence device, wherein the organic electroluminescencedevice comprises the above-mentioned organic electroluminescenceelement.

Compared to the existing technology, the present invention has thefollowing advantages:

By the combination of at least one compound having a structurerepresented by Formula (1) and at least one compound having a structurerepresented by Formula (2), the organic material composition of thepresent invention makes an organic light-emitting element have anobviously enhanced light-emitting efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of the organicelectroluminescence element provided by the application example of thepresent invention, wherein 1 is an anode, 2 is a hole injection layer, 3is a hole transport layer, 4 is an emitting layer, 5 is an electrontransport layer, 6 is an electron injection layer, and 7 is a cathode.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Specific embodiments are further illustrated by the following examplesto demonstrate the technical approaches of the present invention. Thoseskilled in the art should understand that the illustrative examples arehelpful to understand the present invention; however, they should not beconstrued as being limiting to the scope of the present invention.Preparation Example of Compound of Formula (1)

Synthesis of 1B: In a three-necked bottle of 25 milliliters (mL), 1A (10millimoles (mmol)), nitrobenzene (10 mmol), potassium hydroxide (22mmol), copper(I) thiocyanate (1 mmol) and anhydrous tetrahydrofuran (10mL) were added, nitrogen gas was purged for three times, and heated to90° C. under nitrogen gas protection to react for 48 hours (h). Afterthe reaction ended, the reaction mixture was quenched by water, thereaction system was extracted by ethyl acetate, and the organic solventwas removed by rotary evaporation to give a crude product. The crudeproduct was purified by column chromatography (ethyl acetate: n-hexane =1:50 (volume ratio)), to obtain 1B (1.34 g, 49% yield).

Synthesis of 1B′: In a three-necked bottle of 50 mL,2-bromo-4-chlorobenzaldehyde (10 mmol), bis(pinacolato)diboron (12mmol), potassium acetate (100 mmol),[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloride (0.2mmol) and 1,4-dioxane (25 mL) were added, nitrogen gas was purged, andheated to 100° C. under nitrogen gas protection for reaction. After thereaction ended, the reaction mixture was quenched by water, extracted bymethylene dichloride to give a crude product. The crude product waspurified by column chromatography (methylene dichloride: n-hexane = 1:50(volume ratio)), to obtain 1B′ (1.7 g, 64% yield).

Synthesis of 1C: In a three-necked bottle of 50 mL, 1B (10 mmol), 1B′(10 mmol), sodium bicarbonate (20 mmol),tetrakis(triphenylphosphine)palladium (0.2 mmol), tetrahydrofuran (20mL) and water (10 mL) were added, nitrogen gas was purged, and heated to60° C. under nitrogen gas protection to react overnight. After thereaction ended, the reaction mixture was quenched by water, extracted bymethylene dichloride, and the organic solvent was removed by rotaryevaporation to give a crude product. The crude product was purified bycolumn chromatography (ethyl acetate: n-hexane = 1:50 (volume ratio)),to obtain 1C (3.06 g, 92% yield).

Synthesis of 1D: In a three-necked bottle of 50 mL, 1C (10 mmol),(methoxymethyl)triphenylphosphonium chloride (20 mmol), tetrahydrofuran(10 mL) were added, and the temperature was reduced to 0° C. Potassiumtert-butoxide (2 mmol) was resolved in 5 mL tetrahydrofuran. Thethree-necked bottle was purged with nitrogen gas. Under nitrogen gasprotection, the potassium tert-butoxide solution was added dropwise at0° C. to obtain a mixture. After the addition, the mixture was stirredto react for half an hour. After the reaction ended, the reactionmixture was quenched by water, extracted by methylene dichloride, andthe organic solvent was removed by rotary evaporation to give a crudeproduct. The crude product was purified by column chromatography (ethylacetate: n-hexane = 1:50 (volume ratio)), to obtain 1D (1.8 g, 50%yield).

Synthesis of 1E: In a three-necked bottle of 25 mL, 1D (1 mmol) andhexafluoroisopropanol (5 mL) were added, the temperature was reduced to0° C., and nitrogen gas was purged. Under nitrogen gas protection,trifluoromethanesulfonic acid (1 mL) was added dropwise to obtain amixture, and the mixture was stirred to react for half an hour to give acrude product. The crude product was purified by column chromatography(ethyl acetate: n-hexane = 1:50 (volume ratio)), to obtain 1E (0.24 g,73% yield).

Synthesis of 1F: In a three-necked bottle of 50 mL, 1E (10 mmol),bis(pinacolato)diboron (12 mmol), sodium acetate (20 mmol),tris(dibenzylideneacetone)dipalladium(0) (0.5 mmol) and2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (1.5 mmol) were added,then 1,4-dioxane (20 mL) was added, nitrogen gas was purged for threetimes, and heated to 100° C. under nitrogen gas protection for reaction.After the reaction ended, the reaction mixture was quenched by water,extracted by methylene dichloride, and the organic solvent was removedby rotary evaporation to give a crude product. The crude product waspurified by column chromatography (ethyl acetate: n-hexane = 1:50(volume ratio)), to obtain 1F (3.24 g, 77% yield).

Synthesis of 1: In a three-necked bottle of 100 mL, a stir bar was putat the bottom and a refluxing tube was connected on the top. The bottlewas dried and purged with nitrogen gas, and 1F (10 mmol), 1G (10 mmol,CAS1689576-03-1), sodium bicarbonate (23 mmol),tetrakis(triphenylphosphine)palladium (0.5 mmol),bis(di-tert-butyl(4-dimethylaminophenyl)phosphine) dichloropalladium(II)(0.5 mmol), toluene (25 mL), ethanol (7 mL) and water (7 mL) wereseparately added, nitrogen gas was purged for three times, and heated to80° C. to react for 8 h. After the reaction ended, the reaction mixturewas extracted by ethyl acetate, and the resulting extract was dried bymagnesium sulfate, filtered, and dried by rotary evaporation to give acrude product. The crude product was purified by column chromatography(ethyl acetate: n-hexane = 1:10 (volume ratio)), to obtain compound 1(4.13 g, 69% yield).

Anal. Calcd. C₄₁H₂₆N₆: C, 81.71; H, 4.35; N, 13.94. Found: C, 81.78; H,4.33; N, 13.89. HRMS (ESI) m/z [M+H]⁺: Calcd.: 602.22. Found: 603.40.

Synthesis of 1B″: Similar to the synthesis of 1B′, with the differencethat 2-bromo-5-chlorobenzaldehyde is used to replace2-bromo-4-chlorobenzaldehyde, to obtain 1B″ (1.60 g, 60% yield).

Synthesis of 8C: Similar to the synthesis of 1C, with the differencethat 4-fluoro-2-formylbenzeneboronic acid pinacol ester is used toreplace 5-fluoro-2-formylbenzeneboronic acid pinacol ester, to obtain 8C(2.13 g, 64% yield).

Synthesis of 8D: Similar to the synthesis of 1D, with the differencethat 8C is used to replace 1C, to obtain 8D (3.21 g, 89% yield).

Synthesis of 8E: Similar to the synthesis of 1E, with the differencethat 8D is used to replace 1D, to obtain 8E (0.16 g, 48% yield).

Synthesis of 8F: Similar to the synthesis of 1F, with the differencethat 8E is used to replace 1E, to obtain 8F (4.00 g, 95% yield).

Synthesis of compound 8: Similar to the synthesis of compound 1, withthe difference that 8F is used to replace 1F, and 8G is used to replace1G, to obtain compound 8 (4.70 g, 78% yield).

Anal. Calcd. C₄₁H₂₆N₆: C, 81.71; H, 4.35; N, 13.94. Found: C, 81.73; H,4.37; N, 13.90. HRMS (ESI) m/z (M⁺): Calcd.: 602.22. Found: 603.29.

The corresponding products shown in Table 1 were prepared by theabove-mentioned preparation method using the Material 1 and Material 2as raw materials. The structure and characteristic data of the productsare shown in Table 2.

TABLE 1 Material 1 Material 2 Product Yield (%)

CAS2142681-84-1

65

CAS2391956-00-4

67

CAS1618106-98-1

74

CAS2102445-28-1

65

CAS1413365-66-8

68

CAS2286234-09-9

68

CAS 1268244-56-9

61

TABLE 2 Compound Elemental analysis HRMS (ESI) m/z [M+H]⁺ Calcd. FoundCalcd. Found 2 C, 79.85; H, 3.92; N, 13.63; C, 79.92; H, 3.91; N, 13.59;616.20 617.26 3 C, 79.21; H, 4.70; N, 13.52; C, 79.24; H, 4.71; N,13.48; 621.23 622.26 4 C, 82.22; H, 4.70; N, 13.08; C, 82.16; H, 4.72;N, 13.12; 642.25 643.25 5 C, 81.49; H, 4.07; N, 12.13; C, 81.53; H,4.08; N, 12.08; 692.23 693.20 6 C, 83.46; H, 4.38; N, 12.17; C, 83.39;H, 4.40; N, 12.21; 575.21 576.24 7 C, 81.93; H, 4.09; N, 11.37; C,81.89; H, 4.11; N, 11.40; 615.21 616.17 9 C, 79.98; H, 4.09; N, 15.92;C, 80.04; H, 4.08; N, 15.88; 615.22 616.16

Preparation Example of Compound of Formula (2)

Synthesis of compound H1: In a three-necked bottle of 25 mL, H1-A (1mmol), H1-B (1 mmol), Pd₂(dba)₃ (0.05 mmol), 50% tri-tert-butylphosphinesolution (0.1 mmol), NaOtBu (2.2 mmol) and toluene (10 mL) was added,and stirred under reflux for 6 h to react. After the reaction ended, thereaction mixture was cooled to room temperature, and the organic solventwas removed by evaporation under vacuum to give a crude product. Thecrude product was purified by column chromatography (ethyl acetate:n-hexane = 1:10 (volume ratio)), to obtain compound H1 (0.28 g, 48%yield).

Anal. Calcd. C₄₈H₃₁NO₂: C, 88.18; H, 4.78; N, 2.14. Found: C, 88.24; H,4.76; N, 2.13. HRMS (ESI) m/z [M+H]⁺: Calcd.: 653.24. Found: 654.30.

Compounds H2 to H6 were synthesized by the same synthesis method forpreparing compound H1. The raw materials and resulting products areshown in Table 3. The structure and characteristic data of the productsare shown in Table 4.

TABLE 3 Material 1 Material 2 Product Yield%

CAS102113-98-4

CAS1239585-39-7

H2 53

CAS355832-04-1

CAS1819347-21-1

H3 51

CAS2124211-93-2

CAS 1153-85-1

H4 52

TABLE 4 Compound Elemental analysis HRMS (ESI) m/z [M+H]⁺ Calcd. FoundCalcd. Found H2 C, 92.79; H, 5.24; N, 1.97; C, 92.81; H, 5.22; N, 1.97;711.29 712.36 H3 C, 90.06; H, 5.47; N, 4.47; C, 90.01; H, 5.50; N, 4.49;626.27 627.29 H4 C, 90.06; H, 5.47; N, 4.47; C, 90.09; H, 5.45; N, 4.46;626.27 627.22

APPLICATION EXAMPLES

An organic electroluminescence element (such as OLED) having a structureshown in FIG. 1 with the following layer structure was provided: base(indium tin oxide (ITO, as an anode 1) coated glass substrate) / holeinjection layer (HIL) 2 / hole transport layer (HTL) 3 / emitting layer(EML) 4/ electron transport layer (ETL) 5 / electron injection layer(EIL) 6, and the cathode 7 at last.

The materials needed to prepare OLED are listed below, wherein the REF-1is comparative compound 1:

The above-mentioned organic electroluminescence elements were preparedby the following steps:

-   (1) Cleaning the substrate: a glass substrate coated with    transparent ITO layer (the anode 1) was ultrasonicated in an aqueous    detergent (the content and concentration of the aqueous detergent:    an ethylene glycol solvent of ≤ 10 percent by weight (wt%),    triethanolamine of ≤ wt%), washed in deionized water, degreased in    an acetone/ ethanol mixed solvent (volume ratio = 1:1) by    ultrasonication, baked in a clear environment until water was    completely removed, and washed by ozone under ultraviolet light;-   (2) Depositing organic emitting functional layers:-   The glass substrate with the anode 1 was placed in a chamber, and    the chamber was vacuumized until 1×10⁻⁶ Pascal (Pa) to 2×10⁻⁴ Pa,    and a mixture of HAT(CN)₆ and HT (mass ratio of HAT(CN)₆ and HT is    3:97) was deposited on the anode 1 in vacuum to form a hole    injection layer 2, in which the deposited thickness was 10    nanometers (nm).

A hole transport layer 3 was deposited on the hole injection layer 2, inwhich the deposited thickness was 80 nm.

An emitting layer 4 was deposited on the hole transport layer 3.Specifically, the preparation method was: the light-emitting hostmaterial and a guest material were co-deposited in vacuum, in which thetotal deposited thickness was 30 nm.

An electron transport layer 5 was deposited on the emitting layer 4.Specifically, the preparation method was: BPhen and LiQ wereco-deposited in vacuum, in which the total deposited thickness was 30nm.

An electron injection layer 6 was deposited on the electron transportlayer 5, in which the total deposited thickness was 1 nm.

Al (as cathode 7) was deposited on the electron injection layer 6, inwhich the deposited thickness was 80 nm.

The materials (mat.) of each layer in the element and parameters such asthickness (thk.) of Element Examples 1 to 16 (E1 to E11) and ComparativeElement Examples 1 to 3 (CE1 to CE3) are shown in Table 5.

TABLE 5 No. HIL mat./ thk. HTL mat./ thk. EML mat./ thk. ETL mat./ thk.EIL mat./ thk. Catho de mat./ thk. E1 HAT(CN)₆ : HT (mass ratio 3:97)/10 nm HT/ 80 nm compound 1: compound H3: (piq)₂Ir(acac) (mass ratio47.5:47.5:5)/ 30 nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80nm E2 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nm compound 2:compound H4: (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm BPhen: LiQ(mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm E3 HAT(CN)₆ : HT (mass ratio3:97)/ 10 nm HT/ 80 nm compound 3: compound H3: (piq)₂Ir(acac) (massratio 47.5:47.5:5)/ 30 nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nmAl/ 80 nm E4 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nm compound4: compound H1: (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm BPhen:LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm E5 HAT(CN)₆ : HT (massHT/ 80 nm compound 5: compound H2: BPhen: LiQ LiQ/ 1 nm Al/ 80 nm ratio3:97)/ 10 nm (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm (mass ratio1:1)/ 30 nm E6 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nm compound6: compound H4: (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm BPhen:LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm E7 HAT(CN)₆ : HT (massratio 3:97)/ 10 nm HT/ 80 nm compound 7: compound H4: (piq)₂Ir(acac)(mass ratio 47.5:47.5:5)/ 30 nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/1 nm Al/ 80 nm E8 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nmcompound 9: compound H4: (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nmBPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm E9 HAT(CN)₆ : HT(mass ratio 3:97)/ 10 nm HT/ 80 nm compound 8: compound H3:(piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm BPhen: LiQ (mass ratio1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm E10 HAT(CN)₆ : HT (mass ratio 3:97)/ 10nm HT/ 80 nm compound 1: compound H3: (piq)₂Ir(acac) (mass ratio57:38:5)/ 30 nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nmE11 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nm compound 1:compound H3: (piq)₂Ir(acac) (mass ratio 2:17:5)/ 30 nm BPhen: LiQ (massratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm CE 1 HAT(CN)₆ : HT (mass ratio3:97)/ 10 nm HT/ 80 nm compound H1: (piq)₂Ir(acac) (mass ratio 95:5)/ 30nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ 1 nm Al/ 80 nm CE 2 HAT(CN)₆ :HT (mass ratio 3:97)/ 10 nm HT/ 80 nm compound 4: (piq)₂Ir(acac) (massratio 95:5)/ 30 nm BPhen: LiQ (mass ratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80nm CE 3 HAT(CN)₆ : HT (mass ratio 3:97)/ 10 nm HT/ 80 nm REF-1: compoundH1: (piq)₂Ir(acac) (mass ratio 47.5:47.5:5)/ 30 nm BPhen: LiQ (massratio 1:1)/ 30 nm LiQ/ 1 nm Al/ 80 nm

CHARACTERISTIC TESTS OF ELEMENTS

-   Instruments: the characteristics such as current, voltage,    luminance, emission spectrum and the like of the elements of the    above Element Examples 1 to 11 and Comparative Element Examples 1 to    3 were synchronously tested by PR 650 SpectraScan Colorimeter and    Keithley K 2400 SourceMeter;-   Conditions for testing electrooptical characteristics: a current    density of 10 milliamperes/square centimeter (mA/cm²) under room    temperature;-   Service life test: tested with a current density of 20 mA/cm² under    room temperature, and the time period recorded when the luminance of    the tested element was reduced to 98% of the original luminance (in    hour).

The test results of the elements are shown in Table 6.

TABLE 6 No. Driving voltage (V) Current efficiency (Cd/A) Service life(h) E1 3.85 23 165 E2 3.86 21 160 E3 3.97 21 168 E4 4.02 18 155 E5 4.0719 150 E6 3.97 19 158 E7 4.04 20 150 E8 4.01 18 145 E9 3.89 19 150 E103.87 24 185 E11 3.95 19 150 CE1 4.35 12 34 CE2 4.12 17 95 CE3 4.27 15 85

From Table 6, it is clear that the organic material composition of thepresent invention obviously increases the current efficiency. When theorganic material composition is used as the material of an organicfunctional layer, the element has a lower driving voltage (4.07 voltages(V) or lower), a higher current efficiency (18 Candelas/Ampere (Cd/A) ormore) and a longer service life (145 h or more).

The applicant claims herein that even though the organic materialcomposition of the present invention and the applications thereof aredemonstrated by the above examples, the scope of the present inventionis not limited by these examples. That is to say, it does not mean thatthe present invention has to be carried out based on the above examples.Those skilled in the art should understand that any improvement of thepresent invention, equivalent replacement of materials, addition ofauxiliary components, selection of specific means and the like are allwithin the scope of protection and disclosure of the present invention.

What is claimed is:
 1. An organic material composition, characterized inthat the organic material composition comprises at least one compoundhaving a structure represented by Formula (1) and at least one compoundhaving a structure represented by Formula (2):

wherein, R is selected from hydrogen, deuterium, halogen, a cyano group,a substituted or unsubstituted C1-C30 alkyl group, a substituted orunsubstituted C3-C30 cycloalkyl group, a substituted or unsubstitutedC6-C30 aryl group, and a substituted or unsubstituted C3-C30 heteroarylgroup; R¹ is —L¹Ar¹; R² is —L²Ar²; R³ is —L³Ar³; R⁴ is —L⁴Ar⁴; L¹ to L⁴are each independently selected from a bond, a substituted orunsubstituted C6-C30 arylene group, and a substituted or unsubstitutedC3-C30 heteroarylene group; and Ar¹ to Ar⁴ are each independentlyselected from hydrogen, deuterium, halogen, a cyano group, a substitutedor unsubstituted C6-C60 aryl group, and a substituted or unsubstitutedC3-C60 heteroaryl group;

Ar^(W1), Ar ^(W2) and Ar^(W3) are each independently selected fromhydrogen, deuterium, a substituted or unsubstituted C6-C60 aryl group,and a substituted or unsubstituted C3-C60 heteroaryl group; L^(W1),L^(W2) and L^(W3) are each independently selected from a bond, asubstituted or unsubstituted C6-C30 arylene group, and a substituted orunsubstituted C3-C30 heteroarylene group.
 2. The organic materialcomposition as claimed in claim 1, characterized in that, in Formula(1), at least one of Ar¹ to Ar⁴ is a group represented by Formula (a):

X¹ is selected from N and CR^(X1); X² is selected from N and CR^(X2); X³is selected from N and CR^(X3); X⁴ is selected from N and CR^(X4); X⁵ isselected from N and CR^(X5); R^(X1) to R^(X5) are each independentlyselected from hydrogen, deuterium, a cyano group, a substituted orunsubstituted C1-C30 alkyl group, a substituted or unsubstituted C3-C30cycloalkyl group, a substituted or unsubstituted C6-C30 aryl group, anda substituted or unsubstituted C3-C30 heteroaryl group; R^(X1)-R^(X5)are present individually without forming a ring, or any adjacent two ofR^(X1)-R^(X5) joined to form a ring A, and the ring A is a benzene ring.3. The organic material composition as claimed in claim 2, characterizedin that the R^(X1) to R^(X5) are each independently selected fromhydrogen, deuterium, halogen, and a group selected from a phenyl group,a biphenylyl group, a terphenylyl group, a naphthyl group, a phenanthrylgroup, an anthryl group, a phenylnaphthyl group, a naphthylphenyl group,a pyridyl group, a bipyridyl group, a dibenzofuryl group, adibenzothiophenyl group, a carbazolyl group, a carbazolylphenyl group, aphenylcarbazolyl group, a dimethylfluorenyl group, a diphenylfluorenylgroup, a spiro-bifluorenyl group, a dibenzofurylphenyl group, adibenzothiophenylphenyl group, a dimethylfluorenylphenyl group, abenzocarbazolyl group, a benzonaphthofuryl group, and abenzonaphthothiophenyl group, each of which is substituted orunsubstituted; in the X¹ to X⁵, X¹ is N; X² is N; X³ is CR^(X3); X⁴ isCR^(X4); and X⁵ is CR^(X5); or X¹ is N; X³ is N; X² is CR^(X2); X⁴ isCR^(X4); and X⁵ is CR^(X5); or X¹ is N; X² is N; X³ is N; X⁴ is CR^(X4);and X⁵ is CR^(X5); L¹ to L⁴ are each independently selected from a bond,a substituted or unsubstituted phenylene group, a substituted orunsubstituted naphthylene group, and a substituted or unsubstitutedbiphenylene group.
 4. The organic material composition as claimed inclaim 1, characterized in that the compound having a structurerepresented by Formula (1) is selected from the following compounds:

; wherein D represents deuterium.
 5. The organic material composition asclaimed in claim 1, characterized in that, in Formula (2), Ar^(W1),Ar^(W2) and Ar^(W3) are each independently selected from a phenyl group,a biphenylyl group, a terphenylyl group, a naphthyl group, aphenylnaphthyl group, a naphthylphenyl group, an anthryl group, aphenanthryl group, a triphenylenylene group, a pyridyl group, and agroup represented by Formula (b-1):

wherein W is selected from O, S, CR^(W1)R^(W2) and NR^(W), in whichR^(W) is —L^(W)R^(W3); when any one or two or three of Ar^(W1), Ar^(W2)and Ar^(W3) are selected from Formula (b-1), any one of R¹⁰ to R¹⁷,R^(W1), R^(W2) and R^(W3) is connected to L^(W1), L^(W2) or L^(W3) bychemical bonding; when Formula (2) comprises multiple groups representedby Formula (b-1), the groups represented by Formula (b-1) are the sameor different; R¹⁰ to R¹⁷, R^(W1), R^(W2) and R^(W3) are eachindependently selected from a bond, hydrogen, deuterium, halogen, acyano group, a substituted or unsubstituted C1-C30 alkyl group, C1-C30alkyl group in which one or more methylene groups are independentlysubstituted by —O— and/or —S— in a manner that O atom and/or S atom arenot adjacent to each other, a substituted or unsubstituted C7-C30arylalkyl group, a substituted or unsubstituted C6-C30 aryl group, asubstituted or unsubstituted C3-C30 heteroaryl group, a substituted orunsubstituted C4-C30 heteroarylalkyl group, a substituted orunsubstituted C3-C30 cycloalkyl group, a substituted or unsubstitutedC3-C30 heterocycloalkyl group, a substituted or unsubstituted C3-C30cycloalkenyl group, a substituted or unsubstituted C1-C30 alkoxy group,and a substituted or unsubstituted C6-C30 aryloxy group; R¹⁰ to R¹⁷ arepresent individually without forming a ring, or any adjacent two of R¹⁰to R¹⁷ joined to form a ring B, and the ring B is a substituted orunsubstituted C6-C30 aromatic ring; L^(W) is selected from a bond, asubstituted or unsubstituted C6-C30 arylene group, and a substituted orunsubstituted C3-C30 heteroarylene group.
 6. The organic materialcomposition as claimed in claim 5, characterized in that the Formula(b-1) is selected from the structures represented as below:

R¹⁰ to R¹⁷ are each independently selected from hydrogen, deuterium, aphenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group,a phenylnaphthyl group, a naphthylphenyl group, an anthryl group, aphenanthryl group, a benzophenanthryl group, a pyridyl group, adibenzofuryl group, a dibenzothiophenyl group, a dibenzofurylphenylgroup, a dibenzothiophenylphenyl grou, a dimethylfluorenyl group, adiphenylfluorenyl group, a spiro-bifluorenyl group, a benzonaphthofurylgroup, and a benzonaphthothiophenyl group; W is selected from O, S,CR^(W1)R^(W2) and NR^(W), in which R^(W) is —L^(W)R^(W3); R^(W1) toR^(W2) are each independently selected from hydrogen, deuterium, amethyl group, an ethyl group and a phenyl group; or, R^(W1) to R^(W2)joined to form a spiro ring by chemical bonding; R^(W3) is a groupselected from a phenyl group, a biphenylyl group, a terphenylyl group, anaphthyl group, a phenanthryl group, an anthryl group, atriphenylenylene group, a phenylnaphthyl group, a naphthylphenyl group,a pyridyl group, a bipyridyl group, a dibenzofuryl group, adibenzothiophenyl group, a benzonaphthofuryl group, abenzonaphthothiophenyl group, a dinaphthofuryl group, adinaphthothiophenyl group, a dibenzofurylphenyl group, adibenzothiophenylphenyl group, a dimethylfluorenyl group, abenzodimethylfluorenyl group, a diphenylfluorenyl group, aspiro-bifluorenyl group, and a dimethylfluorenylphenyl group, each ofwhich is substituted or unsubstituted; and L^(W) is selected from abond, a phenylene group, a biphenylene group, and a naphthylene group.7. The organic material composition as claimed in claim 5, wherein theFormula (b-1) is selected from the groups represented as below:

, each of which is substituted or unsubstituted; wherein

represents the connection position of the group; when theabove-mentioned group has one or more substituents, the substituents areeach independently selected from deuterium, halogen, a cyano group, anitro group, an unsubstituted or R′-substituted C1-C4 straight orbranched alkyl group, an unsubstituted or R′-substituted C6-C20 arylgroup, an unsubstituted or R′-substituted C3-C20 heteroaryl group, andan unsubstituted or R′-substituted C6-C20 arylamino group; R′ isselected from deuterium, halogen, a cyano group and a nitro group; thearyl group is selected from a phenyl group, a biphenylyl group, aterphenylyl group, a naphthyl group, an anthryl group, a phenanthrylgroup, a benzophenanthryl group, a naphthylphenyl group, adimethylfluorenyl group, a diphenylfluorenyl group and aspiro-bifluorenyl group; the heteroaryl group is selected from a pyridylgroup, a dibenzofuryl group, a dibenzothiophenyl group, a carbazolylgroup, a phenylcarbazolyl group, a pyridylcarbazolyl group, anaphthylcarbazolyl group, a biphenylylcarbazolyl group, adibenzofurylphenyl group, a dibenzothiophenylphenyl group, abenzonaphthofuryl group, a benzonaphthothiophenyl group, abenzocarbazolyl group and a dibenzocarbazolyl group; the alkyl group isselected from a methyl group, an ethyl group, a propyl group, atert-butyl group, a cyclohexyl group and adamantyl.
 8. The organicmaterial composition as claimed in claim 1, characterized in that thecompound having a structure represented by Formula (2) is selected fromthe compounds shown as below:

; and the compound having a structure represented by Formula (1) and thecompound having a structure represented by Formula (2) have a weightratio of 1:9 to 9:1.
 9. The organic material composition as claimed inclaim 8, characterized in that the compound having a structurerepresented by Formula (1) and the compound having a structurerepresented by Formula (2) have a weight ratio of 4:6 to 6:4.
 10. Anorganic electroluminescence material, characterized in that the organicelectroluminescence material comprises the organic material compositionas claimed in claim
 1. 11. An application of the organic materialcomposition as claimed in claim 1 in preparation of an optical element.12. An application of the organic electroluminescence material asclaimed in claim 10 in preparation of an optical element.
 13. An organicelectroluminescence element, characterized in that the organicelectroluminescence element comprises an anode, a cathode and an organiclayer disposed between the anode and the cathode; and the organic layercomprises the organic material composition as claimed in claim
 1. 14. Anorganic electroluminescence element, characterized in that the organicelectroluminescence element comprises an anode, a cathode and an organiclayer disposed between the anode and the cathode; and the organic layercomprises the organic electroluminescence material as claimed in claim10.
 15. An electronic device, characterized in that the electronicdevice comprises the organic electroluminescence element as claimed inclaim
 13. 16. An electronic device, characterized in that the electronicdevice comprises the organic electroluminescence element as claimed inclaim 14.